Hi, I have owned my 74/6 15 yrs. Other than poor breaks I cant say anything bad on the bike. Top speed? Well the speedo is about 10 mph off. I have no problem pegging the speedmetor at 140 mph. Maybe I was lucky getting a good one. Other bikes- 73 /5,71 Norton 750,75 ducati 860 gt,75 kz 400,98 st2 duc,71 ironhead chopper. Thanks,Todd